# File lib/facter/util/ip.rb, line 229 def self.get_bonding_master(interface) if Facter.value(:kernel) != 'Linux' return nil end # We need ip instead of ifconfig because it will show us # the bonding master device. if not FileTest.executable?("/sbin/ip") return nil end # A bonding interface can never be an alias interface. Alias # interfaces do have a colon in their name and the ip link show # command throws an error message when we pass it an alias # interface. if interface =~ /:/ return nil end regex = /SLAVE[,>].* (bond[0-9]+)/ ethbond = regex.match(%x{/sbin/ip link show '#{interface}'}) if ethbond device = ethbond[1] else device = nil end device end